Compressor and scavenger for diesel engines



May 1.192s 1,668,099

R. WINTZER COMPRESSOR AND SCAVENGER FOR DIESEL ENGINES File Oct. 27.192455 $4 salt- I N V EN TOR.

BY FUDOLF m/vrzER,

A ITORNEYS.

Patented May 1, 1928.

UNITED stares BUnoLr wmrznn, or sHo'niawoon, wi'scoNsm, ASSIGNOR 'roNORDBERG- MA-N1T FhcTURme; COMPANY, or mewsuknn, Wisconsin, aCGRPORATION or WIS- COMPRESSOR ANDSC'AWENGER' FOR nmsnr. ENGINES:

Applicatiomfiled- October 27, -1924 serianw. 746,163.

Thelin-vention resides in an improved; arrangement in; whichahigh;d1ity. multi-st'ag'e compressor forthe air and ,a lseavenger forvtheengine are incorporated-into. a com act and highly efficientconstruction, in, w ich-,

the elements co-oper-ate in absolute synohro nismin the performance oftheir? functions, Such a'rrangemen't hasgreatly lessened the cost ofconstructionof the complex detionanapparatus embodying my inyentiom;

with the relative arrangement of the parts thereofi v a a i r I Inthedrawing, the numeraL l0 -iiid1cates the-base of-t'hemulti-stage comressoig and air pump,uponwhichis mounte the frame11,;supportingat-its;upper end the scaveng ing cylinder formation, thelowerhead and-thewallsl3; of whichmaybe integral with the said frame, asa matter of convenient -constructiori; Between-the base and thecylinder, the frame is provided at its sides with recesses 14 and 15 forthe accommodat-ion of the several coolers co-operating'with thec0mpressor,as will be'later described; 1

Upon the opposed inner walls of the narrowed or constricted part 16 ofthe frame, and-in the rear ofthe said recesses,

vertical guides 17- and 18 are formed, these guidesdirectingI themovements of a sliding cross head 19-, to which the piston rod 20 isconnected at its lower end. The cross head is; also connected to theshaft 21 and crank 22 thereon through the pitman 23,. so that by meansof; the construction described the piston rod- 20 is actuated t'oimpartthe desired; motions to the several pistons with which-the constructionis=provided.

The opening leading from the-constriction 16 oh the frame into thescavenging oylinder'through-thehead 12, is olosed-byaplug 24, seated inthe saidopening to form a tight joint, andthe pistonpassing.

through the plug is packed as at 25. The

'ingcylinder 13. I p w A duplex or double duty compressionupper head 26of the scavenging cylinder is constructed so as to permit thecirculation 0t water to effect cooling and retard rise. inits-temperature. The piston 27, attachedto the piston rod 20,- operatesin" the'scaveng.

cylinder 30,. also water cooled,.-

mounted 4 uponthe head=2h,. which latter is provided with a centralopeningthrough which movesis formed wit a piston. ea en; up of whichfunctions withnthe upper 33 of the; cylinder as a low or firststageoomsfi press'o'r (I) for the air, thelower side o the piston acting. asan tinterm ate or second-stagecompressor- ,(II)]@ on the reverse strokeof the pistoni,

A- third. 01 high ay eomprssien; cylih;

der 34, likewise water-cooled,.surmbunts'rthe' cylinder 30,-the lowersid exof the former constituting. the upper head of thelittteii AThepiston 35", formed. upona continuation of the (piston rod-20timctioxis with theup; per en of the cylinder 34" as a final or highcompressor An inletvalve. condlihtsthe air 'threu'g'li;

a feeding-pipe 1 to he low pressure chainber (1),.and an outlet valv'e42, conducts the air in its state 015 initialcompression through pipe4:3 to. the low pressure cedar 44, arranged in the r cess. 14 iii' theframe 11,.after' which the air i's 'assed through a; bafiie 45,arranged" u on t'e'f'r'ame 11 and constructed so as to i recess 14/ I iThe intermediate pressure cham'he'r is providedwith" an inlet valve 46,to which the air admitted into the chamber hajs'heefi' subjected? tointermediatecompression, it passes through an outlet valve 48,and iscon;- ducted by a pipe 4'9 to the intermediate'c'ooh er 50, arranged inthe rec'e'ss'lfi in the name 11, after which it passes ,int'o ahafiie51, formed asa feature in the construction of theplate 52, whichcovers'the recess 15.

From the bathe 51, the air passes through a pipe 53 to the inletvalvelSfi, with which the high pressure chamber (III); is'provid'ediAfter being subjected t6: the third stage or high pressure in thischamber, the ajrf asses thereirom through the uuetvalve 55 a'nd-iisconducted by the pipe 56 to the third o'o'ole'r I A I. orm a closure forthe a tuhularplun er 31,-the upper end ofi which.

. r 1 er side:

"scavengingjcylinder is provided at'one side stroke of the piston-27i A'ca'sing 71 at "tached'to the cylinder "formsa-iclosur'e for and a cappiece 61, arranged at one side of the cylinder 13 completes the conduit.The

w-ith inlet valves 62 and 63, operating in ports 64 and 65 'formed inthe cylinder and through which the air is admitted at each stroke of thepiston 27 working in the cylin' "der 13. The cylinder is also provideduponits"'other iside with outletvalves 67 and 68 leadingfrom ports 69and 70, which likewise act'to pass the air from' t-he cylinder 'a'teachthe space about theoutletports' and valves,

and the ai r under pressure is forced there from into and is directed bythe scavenging manifol'dof the engine.

The piston rod20 is shouldered as at to form a rest for the piston 27,which is held in position by the nut 81, threaded upon and connectingthe reduced intermediate section 82 'Withthe'section 20. The tubularplunger '31're'sts at its lower" end in a concentric depression 83formed in the contiguous face of the piston 27, and embraces at itsupper end the reduced portion 82. Beyond the line of such engagement,the piston rod is further reduced in diameter a s'at 84. The openingin-th 'piston 32 at the'upperend of the tubular member 31 is enlargedfor the 'rec'eption of a collar or head 84 upon the upper end of thesection 82, the collarbeing seated" in'the bottom of such enlargement,and holding the tubular member 31 in its position upon the piston 27,through the connection between the sections 20 and 82. a I

Into the said enlarged opening in the piston 32, the lower end of asleeve 86 carrying the high pressure piston 35', mounted upon and.secured to the upper section 84, is threaded so as to clamp t e collar85 against the seat formed in the piston 32. The connection between thereduced section 84 and the sleeve 86 causes the composite piston rod 20and the elements assembled thereon to move as one part.

Tight joints at all points where connection is made will be insured bythe use of copper gaskets in such connections. The valves employed inthe apparatus are of usual or suitable construction.

Two distinct purposes are subserved by supplying air at differentpressures, that at low pressure being admitted for combustion, and thatat high pressure for atomizing the fuel, both inflows being keptseparate until Patent of the United States, is: v

' ing' means therefor;

entered into the combustion chamber at different times,

Having thus described my invention, what I claim and desire to secure byLetters 1. A compressor and scavenger comprislng a plurality ofcompression cylinders providing for compression in three successivestages ranging from low to high, pistons operating in such cylinders toeffect compression in the order named, a scavenging cylinder, a pistontherefor,- a piston rod connection common to all of the pistons, a

sliding cross-head to which one end of the piston r'od'is connected,;andsingleactuat- 2." A compressor and scavenger comprismg a plurality ofcompression cylinders providing fOI CO mPIE SSIOII' in three successivestages ranging from lowto high, a plurality of pistons one'for' each'cylinder and- 1 co-ope'rating therewith to effect such compression, ascavenging-cylinder to which the compression cylinders are attached apiston therefor, a piston rod connection common to all of the pistons,asliding cross-head to which one end of the piston rod is connected,

and single actuating means therefo'n- *3. A"'co'mpre'ssor and scavengercomprising aligned and connected compression cyl'- inders and a'scavenging cylinder,-the former providing for compression in threesuccessive stages from low to high, pistons for such cylinders, a pistonrod "connection commonto all of the pistons, a sliding crossheadtowhi'ch one end of the piston rod is connected, and single actuatingmeans for the piston rod.

4. A compressor and scavenger comprising a plurality of compressioncylinders providing compression in three successive stages ranging'f'from low to high, pistons co-operating with 'the said cylinders toeffect compression, a' scavenging cylinder having air inlets and outletsateach 'end,"a piston co-operating with the scavenging cylinder, a,piston rod connection commonto all of the pistons, a sliding cross-headto which one end offthe piston rod is connected, and single actuatingmeans for the piston rod.

5. 'A compressor and scavenger'comprismg a plurality of compressioncylinders providing compression in'three successive stages ranging fromlow to high, pistons operating in the said cylinders to eflect suchcompression, a scavenging cylinder and a piston operating therein, arecessed frame upon which the cylinders are mounted, coolers located inthe said recesses and. connected intermediately to the compressioncylinders, a piston rod connection common to'all of the cylinders, asliding cross-head to which one end of the piston rod is connected, andsingle actuating means-for the piston rod.

6. A compressor and scavenger comprising a plurality of compressioncylinders providing compression in three successive stages from low tohigh, inlets and outlets for such cylinders, cooling devices connectedwith the outlet from one cylinder and the inlet to the cylinder next insuccession, pistons working in the said cylinders to efl'ect compressionin the order stated, a scavenging cylinder and a piston operatingtherein, a frame supporting the cylinders and provided with recesses inwhich the cooling devices are arranged, a piston rod connection commonto all of said pistons, a sliding cross-head to which one end of thepiston rod is connected, and single actuating means for the piston rodconnection.

A compressor and scavenger compriss ing a plurality of compressioncylinders providing compression in successive stages from low to high,inlets and outlets for such cylinders, cooling devices connected withthe outlet from one cylinder and the inlet to the cylinder next insuccession, baffles interposed between the cooling device and the inletconnection, pistons working in the said cylinders to effect compressionin the order stated, a scavenging cylinder and a piston operatingtherein, a frame supporting the cylinders and provided with recesses inwhich the cooling devices are arranged, a piston rod connection commonto all of said pistons, and single actuating means for the piston rodconnection.

In testimony whereof, I have signed my name at Milwaukee, this th day ofOctober, 1924.

RUDOLF WINTZER.

